668078014 has 8 divisors (see below), whose sum is σ = 1025422200. Its totient is φ = 326270616.

The previous prime is 668078011. The next prime is 668078027. The reversal of 668078014 is 410870866.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668078011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3884089 + ... + 3884260.

It is an arithmetic number, because the mean of its divisors is an integer number (128177775).

Almost surely, 2^668078014 is an apocalyptic number.

668078014 is a deficient number, since it is larger than the sum of its proper divisors (357344186).

668078014 is a wasteful number, since it uses less digits than its factorization.

668078014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7768394.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 668078014 is about 25847.2051487197. The cubic root of 668078014 is about 874.1964929554.

The spelling of 668078014 in words is "six hundred sixty-eight million, seventy-eight thousand, fourteen".